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Lateral confinement of surface states on stepped Cu(111)

AuthorsSánchez, O.; García Martínez, Jorge Manuel CSIC ORCID CVN ; Segovia, P.; Álvarez, J.; Vázquez de Parga, A. L.; Ortega, J. E.; Prietsch, M.; Miranda, Rodolfo CSIC
Issue Date15-Sep-1995
PublisherAmerican Physical Society
CitationPhysical Review B 52(11): 7894-7897 (1995)
AbstractBy means of scanning tunneling microscopy we observe the lateral confinement of the two-dimensional electron gas of a s,p-like surface state by a regular distribution of steps on vicinal Cu(111). The surface state appears with a reduced binding energy as a result of scattering at steps and partial confinement within the terraces, as revealed by local scanning tunneling spectroscopy. The energy shift of the bottom of the surface state band is measured for several vicinal Cu surfaces with angle-resolved photoemission and found to be consistent with a simple one-dimensional Kronig-Penney model.
Description5 páginas, 5 figuras.-- PACS: 73.20.At, 61.16.Ch, 72.10.Fk
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevB.52.7894
Appears in Collections:(IMN-CNM) Artículos
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